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    NTHUR > College of Engineering  > Department of Material Science and Engineering  > MSE Journal / Magazine Articles  >  The abnormal grain growth and dielectric properties of (Nb, Ba) doped TiO2 ceramics


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/52335


    Title: The abnormal grain growth and dielectric properties of (Nb, Ba) doped TiO2 ceramics
    Authors: Chen, C.J.;Wu, J.M.
    Teacher: 吳振名
    Date: 1989
    Publisher: Springer Verlag
    Relation: 1989, vol. 24, no8, pp. 2871-2878
    Keywords: titanium compounds
    powder technology
    permittivity
    niobium
    grain growth
    barium
    ceramics
    densification
    dielectric properties of solids
    dielectric relaxation
    Abstract: The effect of consolidation pressure and crystallite size of powder crystal phases of TiO2 on sintered microstructure of TiO2 ceramics doped with 0.25 mol.% Nb and 1.0 mol.% Ba were investigated. Also, the development sequence of abnormal grain growth of (niobium, barium) doped TiO2 ceramics was proposed. The second phases of as-sintered surface were determined. The dielectric properties of Ag-electroded samples were correlated with the resistivity of the bulk (Nb, Ba) doped TiO2 ceramics. Abnormal grain growth lowered the resistivity of bulk material of (Nb, Ba) doped TiO2 ceramics, and moved the relaxation frequency of tan δ to high frequency region over 105 Hz. Controlling the sintered microstructures can obtain reasonably good dielectric properties
    URI: http://cat.inist.fr/?aModele=afficheN&cpsidt=7349303
    http://www.springerlink.com/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/52335
    Appears in Collections:[Department of Material Science and Engineering ] MSE Journal / Magazine Articles

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